Syringe.



A. E. WILDE.

SYRINGE. APPLIGATION FILED MAY 24, 191s.

1,1 14,561. Patented 001.20, 1914.

wbb/momo V'HE NORRIS PETERS CD1, `PHOIQ-LITHO, WASHINGIUN, D. EV

ARTHUR E. WILBE, or NEW YORK, iv. Y.

p strainer.

. Application led Specilcation' of Lettersatent.

191s. seriaiNo. 769,749'. n

T all whom t may concern.' l l Be it known that I, ARTHUR E. WILBE, a citizen yof the United States, residing at New York city, in the county of New York and Stateof New York, have invented new and useful Improvements in Syringes, of which the following is a, specification;

The general object of the invention is tol i improve the construction of. douche cups which are permanently associated with the nozzlesof syringes in point of anti-leaking properties especially between the edge of the cupand the vparts of the'body to which the edge is applied whentin use- .Andr to thisV end the. invention resides in forming the cup so as to expand upon the entrance thereinto of the discharged irrigating fluid, whereby to afford sufficient volume for the said fluid and the air entrapped in the cup when the same is brought to bear on the portions of the body with which the cup 1s used in connection.

Otherobjects will appear and be better understood from that embodiment of my invention of which the following is a specification, reference being had tothe accompanying drawing, formingpart hereof, in which:- f

Figure 1 is a 'side elevation of the invention. Fig. 2 is a sectional plan on the line 2`2 of Fig. 1. v Fig. 3 is a view looking at right angles toFig. 1 showing the cup in vertical cross section. Fig. 4 is a detail contracted longitudinal section of the nozzle.

The syringe comprises. a reservoir a and a nozzle '5. The reservoir a may be of any desired construction and adapted to beL suspended for feeding thevirrigating fluid by gravity, Oras shown, this reservoir may be in the form of an ordinary aspirator and connected directly to the nozzle b, in which instance, the usual tube ordinarily employed for connecting the nozzle with the reservoir in a gravity feed device, is eliminated.

As shown in Fig. 4 thenozzle is made up of the sections 5 6 and 7, the first of which has a tapered passage 8 and reduced and exteriorly screwthreaded at the end portion 9, whereby to provide a seat for the gravity valve 10 which controls the passagev 8 and for connection with the screw-thread ed counter-bored portionl 11 of the section 6. The said section 6 carries a spider 12 to limit the movement of the valve 10 in one direction. The section 6 is contracted at one end as indicated at 13, and forms the inner wall ofa chamber 14 whose y.outer Wallis formed v)by the section 7 which is passed over'the contracted portion of the section. 13 vand internally screw-threaded and screwed `onto f a. screwjthrea'dedportion 15 ofthe said sectlon 6. `Theouter. surfaces of the sections atl the joints thereof are coincident fory 0b.

vious reasons yand :communication between the passage of the section "6 and the chamber Patentedct. 1914K.

14 is had through lateralopenings 16 inthe.

contracted portion `13 while the discharge opening 17 ofthe chamber14is located centrally of the free end .surface of the section 7 The section 5 `has a lateralport 18 surroundedby a lcircular casing `19jwhich is eXteriorly `screw-threaded fory a cap or `bonnet `20 which isfcentrally pierced as indicated at 21. A valve 22 located in the cas.

ing 19 controls passage through .the ports 21 and 18, thesaid valve-22 like the valve 10, being noncylindrical in contour, whereby to insure against turning and to effect proper seating, the movement of this valve 22 being limited by the presence of a spider 121.

New `with this construction it will be manifest that upon the application of sufficient pressure to force liquid upwardly through the nozzle the valve 10 will open under i such pressure andthe same will yoperate to close the valve 22. l The opening of thevalve 10 permits the fluid under pressure, to enter air cushion therein, consequently the liquid I will flow down the sides of the nozzle and open the valve 22 upon passing into the port 21 and thence return to the bulb after, however, the said rliquid has entered the cup 'o about to be described. The said cup o 1s preferably formedk of soft rubber and its upper edge 23 is reinforced by beading and conforms in contour, to the contour of the parts to which itis to be applied. The bottom of the cup c isk centrallyI provided with an opening surroundedlby a thickened bushing 24 which, by virtue of its size and the inherent resilient properties thereof, closely i'its the base portion of the nozzle Z) below' to normally occupy the position shown after r the cup is vulcanized. These side walls are of relatively thin rubber and portions of their inwardly bulged surfaces normally bear on the nozzle b, and when so bearing it will be observed that the volume of the cup is relatively small. ing the cup from the irrigated parts as previously stated, the side walls 25 will be gradually pressed outwardly toy the position shown by dotted lines in Fig. 3 as the cup gradually fills, hence the volume of the cup will be increased beyond the normal. Now by virtue of this increase of Volume on theipart of the cup, suliicient room will be aorded for the liquid entering the cup and the air previously entrapped by the act of bringing the upper edge of the cup in contact with the body, hence the air cushion will afford no resistance to the entrance of the fluid into the cup and there will be no tendency of the air or liquid to escape between the edge of the `cup and the parts ofthe body upon which it bears, consequently the said parts and those forming continuations thereof will be kept dry throughout the operation of douching or irrigating.

y, What is claimed as new is:

1. In combination with a syringe; of an eXpansible douche cup surroundin the nozzle of said syringe the walls ot said douche cup being normally collapsed and arranged so as to be projected outwardly by .the pressure of liquid entering the cup. Now upon fluid enter-y l 2. In combination with a syringe; of a normally collapsed douche cup surrounding the nozzle of the syringe and having side walls adapted to be expanded under the pressure of fluid entering the cup.

3. In a syringe, the combination with a nozzle; of a normally collapsed douche cup connected with the nozzle adapted upon the introduction of fluid thereinto to increase in volume substantially in proportion to the amount of fluid so introduced.

In testimony whereof I affix my signature in presence of two witnesses.

ARTHUR E. winnie.

Vitnesses: v

M. E. LAUGHLIN, C. JAMES CRONIN.

Genies' of this 'oatent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

